Drinking cup



FIG. 1 is a top, front right side perspective view of the drinking cup showing the new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is a front elevational view of FIG. 1;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is an enlarged bottom plan view thereof; and,

FIG. 8 is a top, front, right side exploded perspective view of FIG. 1.

The broken lines in FIG. 7 are included for the purpose of illustration and form no part of the claimed design. 

The ornamental design for a drinking cup, as shown and described. 